<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>登录</title>
    <style>
      .account{
        width: 300px;
        margin-top: 100px;
        margin-left: auto;
        margin-right: auto;
        padding:10px 30px 30px 30px;
        background-color: #faebcc;
        border-radius: 20px;
        box-shadow: 5px 5px 30px #aaa;
      }
    </style>
    <link rel="stylesheet" href="static/plugins/bootstrap-3.3.7/css/bootstrap.css">
</head>
<body>
<div class="account">
    <div>
      <h3 style="text-align: center">用户登录</h3>
    </div>
  <form>
  <div class="form-group">
    <label for="exampleInputEmail1">用户名</label>
    <input type="email" class="form-control" id="exampleInputEmail1" placeholder="请输入用户名">
  </div>
  <div class="form-group">
    <label for="exampleInputPassword1">密码</label>
    <input type="password" class="form-control" id="exampleInputPassword1" placeholder="请输入密码">
  </div>
  <div class="checkbox">
    <label>
      <input type="checkbox">记住我
    </label>
  </div>
  <button type="submit" class="btn btn-primary">登录</button>
  </form>
</div>

</body>
</html>